| 摘要 |
An electrochemical cell is provided with plural identical selective electrodes and at least one chemical reactor for the indirect measurement of clinical-chemical parameters. The electrodes are ion-selective for the same ionic species or gas-selective for the same gaseous species. One of the two electrodes can be used as a measuring electrode and the other as a reference electrode. In the case of gas-selective electrodes, the reference electrode can be selective for a different ionic species. A third electrode with just electrical conducting properties can be provided. The chemical reactor can utilize immobilized enzymes, or immobilized substrates, or ion exchange resins, and is preferably connected to the measuring electrode only. Two fluidic paths may be provided in the electrochemical cell, as well as one input and two outputs, or two inputs and just one output in sequence. More sophisticated types of apparatus based on the same principles, can incorporate two or more different chemical reactors, or else reactors which can be connected to both the measuring and the reference electrodes, the respective functions of which can be exchanged, or the apparatus can employ a plurality of elementary electrochemical cells. |
